205411135213 has 8 divisors (see below), whose sum is σ = 208601997920. Its totient is φ = 202223949840.

The previous prime is 205411135159. The next prime is 205411135247. The reversal of 205411135213 is 312531114502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-205411135213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205411135283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 806643 + ... + 1030288.

It is an arithmetic number, because the mean of its divisors is an integer number (26075249740).

Almost surely, 2^205411135213 is an apocalyptic number.

It is an amenable number.

205411135213 is a deficient number, since it is larger than the sum of its proper divisors (3190862707).

205411135213 is a wasteful number, since it uses less digits than its factorization.

205411135213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1838667.

The product of its (nonzero) digits is 3600, while the sum is 28.

Adding to 205411135213 its reverse (312531114502), we get a palindrome (517942249715).

The spelling of 205411135213 in words is "two hundred five billion, four hundred eleven million, one hundred thirty-five thousand, two hundred thirteen".